PREPARATION OF TITANIUM CATALYST SOLUTION AND PREPARATION OF POLYESTER USING SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for preparing an alkylene glycol solution of a titanium catalyst which does not suffer oxidation by heat generated by stirring or circulation by a pump during long-term storage and exhibits excellent catalytic activities and to provide a method for preparing a polyester. SOLUTION: The subject method for preparing a titanium catalyst solution comprises mixing an alkylene glycol solution of a tetraalkoxytitanium with water in preparing an alkylene glycol solution containing 0.1-10 wt.% of a tetraalkoxytitanium and 0.5 to 2.0-fold moles of water based on 1 mole of the tetraalkoxytitanium. The titled method for preparing a polyester comprises the use of the titanium catalyst solution prepared by this method.